Finding the Fourth Proportional to 153,712,519.55, 212,128,335.57 and 84,096,307.34
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Solution
The fourth proportional to 153,712,519.55, 212,128,335.57 and 84,096,307.34 is: 116,055,671.69
Step by Step Solution
- Step 1: Write the proportion equation
153,712,519.55 : 212,128,335.57 = 84,096,307.34 : x - Step 2: Convert to fraction form
153,712,519.55/212,128,335.57 = 84,096,307.34/x - Step 3: Cross multiply
153,712,519.55x = 212,128,335.57 × 84,096,307.34 - Step 4: Simplify right side
153,712,519.55x = 17,839,209,703,617,374 - Step 5: Solve for x
x = 17,839,209,703,617,374/153,712,519.55 - Step 6: Final answer
x = 116,055,671.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.